Perhaps the complacency was assuming people would treat dangerous viruses as deadly weapons, and we've decided it's not worth the risk.

So not:

"Scientists working in this field might say—as indeed I have said—that the benefits of such experiments and the resulting knowledge outweigh the risks."

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3484390/

(Of course, common sense would say that if you're not willing to do this in your own backyard, you probably shouldn't let people with laxer standards and do it in theirs)